Merge pull request rails#23769 from kamipo/remove_alias_exec_without_stmt_exec_query

Remove `alias exec_without_stmt exec_query`

Author: spastorino

activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb

@@ -134,8 +134,6 @@ def exec_query(sql, name = 'SQL', binds = [], prepare: false)
         ActiveRecord::Result.new(result.fields, result.to_a)
       end
 
-      alias exec_without_stmt exec_query
-
       def exec_insert(sql, name, binds, pk = nil, sequence_name = nil)
         execute to_sql(sql, binds), name
       end